Car-axle.



' No; 819,427 PATENTED MAY 1, 1906.

W. HARTILL-LAW.

GAR AXLE.

APPLICATION FILED NOV. 22. 1904. RENEWED SEPT.15; 1905.

WITNESSES; OW INVENTOR.

BY x

MW; QM

b ATTORNEYS WILLIAM HARTILL-LAW, OF TORONTO, CANADA.

GAR-AXLE.

Specification of Letters Patent.

Patented. May 1, 1906.

Application filed November 22,1904. Renewed September 15,1905- SerialNo. 278.5 95.

To all whom it may concern:

Be it known that I, WILLIAM HARTILL- LAW, of the city of Toronto, in thecounty of York, Province of Ontario, Canada, have invented certain newand useful Improvements in Oar-Axles, of which the following is aspecification.

The object of my invention is to construct a car-axle which will permitof one wheel rotating at a different rate of speed from the other, thusreventing slipping friction on the rails whi e the wheels are passingaround curves or when one wheel happens to be of a different diameter tothe other; and it consists, essentially, in forming the axle in twoparts, the end of one being made revoluble within the end of the otherand locked therein in the manner hereinafter more specifically describedand then definitely claimed.

Fi ure 1 is an outside view of part of a stan ard axle provided with myimprovements. Fig. 2 is a sectional elevation of the same. Fig. 3 is across-section of the same on the line a a in Fig. 2.

In the drawings like letters of reference indicate corresponding partsin the different figures.

The axle is of a compound type, consisting of two arts A and B, the endof the part A being slightly enlarged and the end of the part B journaled therein. The part B of the axle has two collars 0 formedthereon, se arated by a space. The end of the axle is further enlargedto fit over the collars O and has a recess formed therein to form, withthe space between the collars, an annular channel D. The parts of theaxle are locked together by fitting a metal ring into this channel.While it is possible to flow molten metal into this channel to form thering, yet it is doubtful whether such an arrangement would becommercially practicable. I therefore prefer to form a ring of segmentsE and to introduce these segments into the channel through a slot F,formed in the axle A. This slot may be of the same length or slightlylonger than the segments E. After all the segments have been introducedthe slot is closed by means of a locking-piece G, suitably held in placeby a pin or rivet H. This locking-piece may be elther independent orformed as part of one of the segments E, as shown in the drawings. Theaxle having been assembled as described may be disconnected by removingthe locking-piece G and then removing the segments E and the outincrease in the cost 0 traction.

locking-ring, one by one, through the slot F, when the parts of the axlemay be readily separated. Suflioient space is left between the end ofthe axle B and the end of its j ournal for a lubricant, which may beintroduced through a hole I, bored through the axle, to any convenientpoint.

The advantages of my invention are manifold and obvious. It will be seenthat it provides means whereby one wheel may travel faster than theother wheel. This entirely prevents skidding under all circumstances, asif one wheel happens to be of less diameter than the other the one isenabled to make a greater number of revolutions to compensate for thelack in diameter, and when the axle is passing around a curve one wheelby making a greater number of revolutions than the'other compensates forthe difference in length of the two rails. As skidding or slip isentirely avoided, the consequent torsional strain on the axle is alsoavoided. A saving in power, and consequently in cost, is obtained, asboth wheels roll on the rails, and the friction caused by skidding isentirely avoided. The use of my invention will also reduce the cost ofre airs to both rolling-stock and track. It wil reduce the danger of thederailment of trains and consequent loss of life and pro erty whenrunning around curves, as the' Wlieels when rolling along the outer raildo not have the same tendency to climb the rail as when the wheel isskidding, as on the end of an ordinary axle. The reduction of frictionwill permit of the increasing s eed of trains with- The life of the axlewill also be increased by the elimination of the torsional stressconstantly occurring in ordinary axles.

What I claim as my invention is 1. An axle comprising two parts, onejournaled within the other, in combination with a com lete metal ringfitted in an annular flat-sided channel formed artly in one part of theaxle and partly in the other, substantially as described.

2. An axle comprising two parts, one j ournaled within the other, anannular channel being formed partly in one part and partly in the other,and a slot cut in the outer part communicating with the said channel, incombination with a ring completely filling the channel and formed insegments ofv an annulus insertible through the said slot, substantiallyas described.

3. An axle comprising two parts,- one journaled within the other, anannular channel being formed partly in one art and partly in the other,and a slot cut in the outer part communicating with the said channel, incombination with a ring fitting the channel and formed in segmentsinsertible through the said slot; and a locking-piece secured in thesaid slot, substantially as described.

4. An axle comprising two parts, one journaled within the other, anannular channel being formed partly in one part and partly in the other,and a slot cut 1n the outer part communicating with the said channel, incombination with a ring fitting the channel and formed in segmentsinsertible through the said slot; and a locking-piece secured in thesaid slot and formed as part. of one of the segments of the ring,substantially as described.

5. An axle formed in two parts, the end of one journaled within the endof the other, the inner part having collars integral therewith,

having a space between theni, and the outer Eart an annular recessforming with the s ace etween the collars an annular channe, incombination with a metal ring completely filling said channel,substantially as described.

6. An axle formed in two parts, the end of one journaled within the endof the other, the inner part having collars integral therewith, having aspace between them, and the outer art an annular recess formin with thespace between the collars an annu ar channel, in combination with a ringfitting the channel and formed in segments insertible through the saidslot; and a locking-piece secured in the said slot and formed as part ofone of the segments of the ring, substantially as described.

Toronto, November 12, 1904:.

WILLIAM HARTlLL-LAW.

In presence of J. Enw. MAYBEE, P. R. J ONES. j

